| 0,0 → 1,108 |
|---|
| //Knihovna pro senzor MPL3115 |
| //(c) Jan Chroust 2013 |
| |
| void mpl3115_setA (void) //nastavení pro výku |
| { |
| |
| |
| i2c_start(); //STANDBY mode |
| I2C_Write(MPL3115_ADDR_W); |
| I2C_write(0x26); |
| I2C_write(0xB8); |
| i2c_stop(); |
| |
| i2c_start(); //PT_DATA_CFG set |
| I2C_Write(MPL3115_ADDR_W); |
| I2C_write(0x13); |
| I2C_write(0x07); //hodnota |
| i2c_stop(); |
| |
| i2c_start(); //ACTIVE mode |
| I2C_Write(MPL3115_ADDR_W); |
| I2C_write(0x26); |
| I2C_write(0xB9); |
| i2c_stop(); |
| } |
| |
| void mpl3115_setP (void) //nastavení pro tlak |
| { |
| |
| |
| i2c_start(); //STANDBY mode |
| I2C_Write(MPL3115_ADDR_W); |
| I2C_write(0x26); |
| I2C_write(0xB8); |
| i2c_stop(); |
| |
| i2c_start(); //PT_DATA_CFG set |
| I2C_Write(MPL3115_ADDR_W); |
| I2C_write(0x13); |
| I2C_write(0x07); //hodnota |
| i2c_stop(); |
| |
| i2c_start(); //ACTIVE mode |
| I2C_Write(MPL3115_ADDR_W); |
| I2C_write(0x26); |
| I2C_write(0x39); |
| i2c_stop(); |
| } |
| |
| |
| byte mpl3115_read (byte reg) |
| { |
| byte i; |
| |
| i2c_start(); |
| I2C_Write(MPL3115_ADDR_W); |
| I2C_write(reg); |
| i2c_start(); |
| I2C_Write(MPL3115_ADDR_R); |
| i=i2c_read(0); |
| i2c_stop(); |
| |
| return i; |
| } |
| |
| |
| float mpl3115_T (void) //teplota ve stupnich |
| { |
| int m; |
| float l, t; |
| |
| m= mpl3115_read (0x04); |
| l= (float)(mpl3115_read(0x05)>>4)/16.0; |
| t = (float)(M + L); |
| return t; |
| } |
| |
| float mpl3115_A (void) //vyska v m |
| { |
| |
| int16 m; |
| unsigned int8 c; |
| float l, a; |
| |
| m= mpl3115_read (0x01); |
| c= mpl3115_read (0x02); |
| l= (float)(mpl3115_read(0x03)>>4)/16.0; |
| a = (float)((m << 8)|c) + l; |
| return a; |
| } |
| |
| |
| float mpl3115_P (void) //tlak v Pa |
| { |
| unsigned int32 m; |
| unsigned int16 c; |
| unsigned int8 l,l2; |
| float p, l1; |
| |
| m= mpl3115_read (0x01); |
| c= mpl3115_read (0x02); |
| l=mpl3115_read(0x03); |
| l2=l<<2; |
| l1= (float)(l>>6)/4.0; |
| p = (float)((m << 10)|(c<<2)|(l>>6)) + l1; |
| |
| return p; |
| } |